746 INDEX 
Berberis, response of stamens to stimu- Bogbean, 587 
lation, 36 Boldo, 248, 522 
Berberis N. F., 519 Boldo Family, 522 
Berry, defined, 304 Boldus, 522 
Beta, 514 Boletus, 404 
maritima, 514 edulis, 75, 103 
vulgaris, 514 Selleus, Fig. of, 404 
Betula, 504 Borage, 592 
Betula alba, 505 Borage Family, 91, 591 
Betula lenta, 504, 505 Boraginacea, 591 
Betula populifolia, 204 Boraginea, 591, 592 
Betulacea, 504 Borke, 131 
Biennial plants, 163 Borrelia, 373 
Bifacial leaf blade, 250, 251 Boswellia carterii, 548 
Binary division, 45 Botanical nomenclature, 329 
Binary fission, 28 Botany, agricultural, 3 
Binomial system, 325 cryptogamic, 3 
Biology, defined, 1 defined, 1 
Birch Bark, 505 departments of inquiry, 2 
Birch Family, 504 derivation of, 1 
Birthwort Family, 510 economic, 3 
Bismark Brown, 681 : geological, 3 
Bistorta, 513 importance to man, 4 
Bitter Almond, 103 phanerogamic, 3 
Bittersweet, 188, 189, 596, 599 pharmaceutical, 3 
Climbing, 552 Botrychium, 434 
Bixa Orellana, 565 Botrydium, 338 
Bixacea, 565 Bougainvillea, 514 
Black Alder, 552 Bract, 256 
Black Caraway, 519 Bract leaves, 228 
Black Fungi, 395 Bracteolar leaf, 227, 256 
Black Mold, 377 Bracteoles, 227, 256 
Black Mustard, 529 Bramer’s reagent, 92 
Blackberry, 186, 300, 535 Brake fern, 72, 433, 435 
Bladder Wrack, 355 Branch Traces, 145 
Bladderworts, 638, 639 diagrams of, 146 
Blakeslee, 357 Branching, deliquescent, 191 
Blessed Thistle, 615 - dichotomous, 355 
Bloodroot, 186, 189, 524, 526 excurrent, 191 
Blue Cohosh, 522 of roots, 176 
Blue Flag, 492 _ Brand spores, 398 
Blue Green Alga, 334 Brandy, 556 
mucilage of, 95 Brassica, embryo of, 295 
Blue Vervain, 593 Brassica juncea, 530 
Bluebell Family, 103, 609, 610 Brassica napus, 530 © hae 
Blueberry, 580, 581. Brassica nigra, 103, 629, 530 — 
Blue-weed, 592 : Brauneria angustifolia, 612, 615 
Bock, H., 324 pallida, 615 
Bog Mosses, 425 Brayera, 259, 636 
